Megawizard loading problem for cycloneIII device

Hi ,

I want to control DDR2 ram using Cyclone 3 Video development kit and megawizard. Kit contains an EP3C120F780C7 chip... When I tried to add ddr2 sdram high performance controller ip to any project , Megawizard splash screen loading a few bar and closing ... There is no problem for any other ip functions. The other weird is ; There are 4 computer , 2 of adding the ip successfully but the other 2 doesn't....(all computers Xp installed).. also I tried to add that ip with all license types( full license,trial,web edition license)

is there anyone know , how can I fix this ? thanks...